SECURITE
IOR
WEATHER BULLETIN FOR THE HIGH SEAS FOR METAREA VII. EAST OF 20E.
ISSUED BY THE SOUTH AFRICAN WEATHER SERVICE ON THE 11th OF AUGUST 2024 AT 17:30 UTC.
FOR SOUTH-EAST SECTOR OF METAREA. VII, PREPARED BY REUNION, SEE AREA 2 BELOW.
NOTE: WX OBSERVATIONS.
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COULD ALL VESSELS EXPERIENCING UNEXPECTED, SEVERE WX/SEA STATE PLEASE MAKE EVERY EFFORT TO REPORT THIS TO SAWS VIA CAPE TOWN RADIO.
AREA 1:
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FORECAST VALID FROM 112200 TO 122200 UTC:
WIND IN KNOTS, WAVE HEIGHTS IN METERS. NO SEA STATE GIVEN IF WAVES LESS THAN 3M.
NOTE THE WIND SPEEDS QUOTED HERE ARE THE EXPECTED AVERAGE SPEEDS.
INDIVIDUAL GUSTS MAY EXCEED THESE VALUES BY A FACTOR OF UP TO 1.5.
WAVE HEIGHTS ARE SIGNIFICANT WAVE HEIGHTS, WHICH MAY BE ACCOMPANIED BY INDIVIDUAL WAVES 1.5 TO 2.0 TIMES HIGHER.
GALE FORCE WARNINGS:
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1. CAPE EAST: W to NW 35 in the east in the first half of the period, but
SW to W 35 to 45 in the west and central spreading to the
east by the end of the period. It will become NW 35 in
the west by the second half of the period.
2. MARION FORTIES EAST: N to NW 35 to 45 in the south-east and east
central at first.
SYNOPTIC CHART 12:00Z
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Low 55s22e 973 hPa
Low 46s26e 978 hPa
Cold Front : 38s43e 43s46e 51s54e into 52s44e Cold Front : 36s24e 41s30e into 41s26e.
AREA FORECAST:
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CAPE EAST (32.5S/40S, 20E/50E):
WIND : W to NW 15 to 25 in the east reaching 30 to 35 in the east in
the first half of the period, otherwise SW to W 15 to 25
reaching 35 to 45 west and central by spreading to the east by
the end of the period. It will become NW 20 to 30 in the west
by mid-period reaching 35 in the west by the second half of
the period.
VIS : Moderate to poor in showers and rain, becoming good in the
north in the second half of the period.
SEA STATE: 4.0 to 5.5m reaching 6.0 to 7.0m in the south-west spreading
central towards the end of period, SW to W swell.
DURBAN EAST (32.5S/25S, EAST COAST/55E):
WIND : N to NW 15 to 25 in the east, otherwise S to SW 15 to 25 in
the west.
VIS : Moderate in showers and rain, otherwise good.
SEA STATE: 3.0 to 4.0m in the extreme south and central, SW swell.
MOZAMBIQUE CHANNEL:
WIND : SE 10 to 20 in the north and central at first otherwise
NE to E 15 to 25 but SE to S 15 to 25 in the extreme south-
west in the south and in places in the south-west.
VIS : Good, but moderate in the north.
SEA STATE: 2.5m in the extreme south, SW swell.
MADAGASCAR EAST:
WIND : SE 15 to 25 in the north, otherwise E to NE 15 to 25.
VIS : Good in the south-west, otherwise moderate in showers in
places.
SEA STATE: 3.0m in the extreme south, SW swell.
MARION FORTIES EAST (40S/50S, 35E/50E):
WIND : N to NW 20 to 30 reaching 35 to 45 in the south-east and east-
central at first, and in the north and central in the first
half of the period. It will become W to SW 15 to 25 in the
west spreading to the east by the end of the period.
VIS : Good but moderate to poor in showers places at times.
SEA STATE: 4.0 to 5.0m reaching 6.0 to 7.0m in the east in the first half
of the period, NW to W swell.
AREA 2:
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MARINE METEOROLOGICAL BULLETIN FROM METEO-FRANCE/LA REUNION ON AREA ACK
(AMSTERDAM-CROZET-KERGUELEN)
DATE: 24/08/11 at 1700 utc
AVERAGED WIND SPEED ON BEAUFORT SCALE. (Wind gusts may be stronger than averages given here).
PART 1: WARNING :
– Gale force 8 over CRO and KER.
PART 2: GENERAL SYNOPSYS, 24/08/11 at 1200 UTC :
– High 1027 hPa near 27S/64E, moving eastward slowly.
– Waving front CG moving eastward rapidly over CRO then KER, with deepening low, forecasted 990 hPa near 41S/56E at end.
PART 3: FORECAST FOR 24 HOURS from 11/08/24 at 1800 UTC to 12/08/24 at 1800 UTC :
WAM (30S/40S,50E/65E) :
Frontal rains and showers, squalls.
WIND: North-Westerly 5/6, increasing 7 later ahead front, backing
westerly 7 behind over southwestern part at end. Gusts on squalls.
SEA : very rough. Long SW swell 4/5 m.
VIS : poor with precipitations.
AMS (30S/40S,65E/80E) :
Showers.
WIND: Westerly 5/6 veering NW 6/7 over southwestern part at end.
SEA : rough. SW swell 3/4 m.
VIS : poor with precipitations.
CRO (40S/50S,50E/65E) :
Frontal rain and showers, squalls over northern part.
WIND: Westerly 6 to 8 from north to south area, decreasing later W to NW
4/5 over northern part, but becoming clockwise 6 to 8 at end over
northern part, westerly 5/6 over southern part. Gusts on squalls.
SEA : very rough to high. W swell increasing 5 to 7 m.
VIS : poor in precipitations.
KER (40S/50S,65E/80E) :
Frontal rain and showers.
WIND: Westerly 6/7 increasing 7/8 later over southern part.
SEA : rough to very rough becoming very rough to high. W swell 3/4 m
increasing 5/7 m over western part later.
VIS : poor in precipitations.
ENDS THIS IS CAPETOWNRADIO
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